एपीए उद्धरण

Joseph A Pecar. The McGraw-Hill telecommunications factbook. New York: McGraw-Hill.

शिकागो स्टाइल उद्धरण

Joseph A Pecar. The McGraw-Hill Telecommunications Factbook. New York: McGraw-Hill.

एमएलए उद्धरण

Joseph A Pecar. The McGraw-Hill Telecommunications Factbook. New York: McGraw-Hill.